Oil burner



l 613,820 Jan. 11, 1927. G B. DAHL OIL BURNER Filed March 27, 1926 2 Sheets-Sheet 2 ATTORNEYS WITNESSES lhas for an object to Patented Jan. 11, 1927.

GIORGI B. Dm, 0l m YORK, I. Y.

011| BURNER.

numana ma meh a?, me. semi n. saaie. y

This invention relates to oil burners and rovide an improved construction wherein tlle oil is gravity -fed with the parts so arranged that a ioodmg of the burner cannot take place.

Another object of the invention is to provide an oil burner for domestic use or other uses which may use different grades of oil and which presents means capable of' ad]ust ment to secure maximum results-with the different oils used.

An additional object of the invention is toV provide an oil burner wherein there 1s presented primary and auxiliary air inlets so arranged lthat either may be varied to a desired extent.

An additional object of the invention is to provide an oil burner wherein the parts are so arranged as to cause a substantially perfect combustion ofthe oil with means for cleaning the vapor or gas opening from time to time as may be neceary..

In the accompanying drawings- 'Figure 1 is a longitudinal vertical sectional view through part of a furnace with an embodiment of the invention shownapplied thereto, said embodiment being shown in section.

Figure 2 is an enlarged fragmentary view showing cleaning blades embodying certain features of the invention.

Figure 3 is a sectional view through Figure 1, approximately on line 3 3.

Figure 4 is a sectional view through Figure 3 on line 4-4.

Figure 5 is a detail perspective view showing an air control lever and locking means therefor.

Figure-6 is a detail fragmentary elevation showing a cam structure embodying certain features of the invention, said figure being taken as viewed from line 6-6 of Figure 4.

eferring to the-accompanying drawings by numerals, 1 indicates an ordinary furnace 'used in a dwelling, said furnace being provided with the usual furnace door 2 through which air may be admitted to the ash pit andthen pass up to the grates in the usual manner. In the prent instance, air is permitted to enter the ash pit inthe usual manner but is not permitted to pass up through the grates 3, which if desired, may be entirely removed. As is usual with furnaces, the furnace 1 is provided with a fire pot 4 -whi'ch has a shelf 5 on which is arranged the plate 6 which is bolted or otherwise secured to the plate 7 having an annular upstanding wall 8. The wall 8 is provided with a number of inclined sections 9 acting as cam faces or surfaces co-acting with the cams 10 on the mixing drum 11. At one point the mixing drum 11 has a downwardly extending portion 12 adapted to receive bolts or'rivets 13 which in turn extend through the openings 14 (Figure 5) and the upstanding section 15 of the air adjlixsting lever 16. The lever 16, as shown in igure 5, loosely extends through a fitting 17 and said fitting is slidingly mounted on the rod 18 but locked thereto at any desired point by the set screw 19. The rod 18 is carried by members 20 and 21 which are slidingly mounted on the vertical rods 22 and 23, which vertical rods are secured by suitable brackets 24 to the furnace 1.

In actual use, the lever 16 is moved in a horizontal plane so as to partly rotate the mixing drum 11 and as this is rotated, cam 10 will engage the cam face 9 so that the drum 11 is raised and lowered according to the direction of rotation of the lever 16. As indicated in Figure 4, there are three cams 10 and a corresponding number of cam faces 9l but if desired, a diiferent number could be used without departingefrom the spirit of the invention. It will noted that the drum 11 is provided with a downwardly extending annular wall 25 fitting in the wall 8 and is braced by a few angle webs 26. From the top of the wall 25 an air heating ring 27 extends, said ring as shown in Figure 1, being curved so that theA lower part 28 will be vertical. Preferably the lower end of part 28 is chamfered or beveled at 29 so as to present a comparatively sh edge beneath which the air must pass. t w1ll be noted that the air moves in the directionv ofthe arrowf30 (Figure 1) namely, upwardly around the air drum 31 and then down into this air drum and finally out through the opening 32 into the interior of the drum 11, said air discharging into the drum immediately above the vaporizing ring 33. An air dellecting r' 34 is ar as shown in Fi I re 1 with e lower edge resting on the s oulder 35, said shoulder being formed on the outer flange 36 of the oil trough 37. The ange 36 of the oil trough merges into what may betermed the bottom sectlon 38 which in tlun merges into the inner vertical annular flange 39. The ange 39 is provided with a number of webs 40 for centerin the auxiliary air tube 41 which is loosely p aced in position and provided with a number of outlets 42 at the upper end and with a removable deflecting cap 43 which detlects the air and also the ame coming upwardly through the drum 11. The ring 33 tits in the oil trough 37 and loosely rests on the shoulder 44, said ring having a vaporizing annular depression 45.

Y It will be noted also that the ring 33.is provided with an annular lange or lip 46 which coacts With the lip 47 of ring 34 for forming what may be termed a gas opening 48 throu h which the gas or vapor formed in troug 37 escapes. It will be noted that the ring 33 is provided with a number of webs for dividing up the vapor and causing the same to escape evenly through the opening 48. As the air passes downwardly, over the rin 34 and out through the openin 32, it wil strike the vapor escaping throug 1 opening 48 and immediately mix therewith as both the air and the vapor move upwardly into the mixing drum 11. The combustible mixture is ignited at or near the lower edge of the section 28 of drum 11 and the iiame asses upwardly through the drum and is deflected by the cap 43. ln case the color of the name is not quite satisfactory and more air is needed, the same may be supplied by manually shittin the air valve 49 whereupon more air wil? pass through this air vvalve and upwardly through the pipe 41 and out throu l1 opening 42. In case air supplied in t is way is not suilicient, lever 16 may be moved in such a direction as t0 raise the mixing drum 11 and thus enlarge the opening 32 so as to allow more air to pass therethroufrh. By providing this double adjustinent ihr air, a proper liame may be readily secured and, consequently, maximum results obtained.

lt will be noted that the vaporizing member or ring 33 and the ring 34 are both loosely mounted and may be' readily rotated. Each of these rings is provided with an apertured ear 50. A wire hook may be Ainterlocked with these ears and the rings oscillated or rotated as desired. The ring 34 carries a thin blade or structure 5l and the ring 33 carries a blade 52 as shown in Figure 2. When the ring 34 is being rotated, blade 51 will scrape against the upper surface et ring 33 for cleaning any deposit that might be thereon. Likewise when ring 33 is being moved, blade 52 will scrape the under surface of ring 34 for removing any carbon or other deposit thereon. This may Ybe done from time to time as the burner is in use and the opening 47 maintained clear for the passageot the vaporized oil. lu supplying oil to the trough 37, the same is preferably supplied at two diametrically opposite points as shown in Figures 3 and 4. From Figure 3 it will be observed that the respective fittings 53 are connected to the trough 37 byl a. suitable pi 54 and also the fittings 53 are connecte .to a'well 55 adapted to receive foreign matter which may drop therein from time to time. The well 55 may) be unscrewed and cleaned at any time. ipes 56- and 57 are connected with the respective 'fittings .53 and these pipes are connected together by a cross pipe 58 (Figure 4) so 'that oil may be fed to lcothof these pi s through the single inlet pipe 59. The pipe 59 is connected to what is known as' acontrol valve 60 which is a well known construction and forms no'part ot' the presentinvention except in combination as means-for automatically supplying oil as desired. However, in connection with the valve 60, there is provided an overiiow pipe 61 of lspecial construction, said over flow pipe having an inverted U member 62 arranged so that the overflow will pass therethrough before an excessive amount of oil is fed to trough 37. It will be noted that the overflow in the U member 62 is in line with the upper ede of ring 33 so that the burner cannot be coded. The valve 60 is controlled by va weighted lever 63 in the usual manner which is connected to the steam actuated diaphragm by any suitable means, as for instance, the wire 64. Vhen lever 63- is swung upwardly, vthe valvev() will be closed more and more and as this lever is swung downwardly.y the valve will be opened more and more. that the valve 60 is supplied with oil from a suitable source through the inlet pipe 65. The valve 60 may be shut ofi completely by swinging the lever 63 over toward the left manually. f

It will be notedl In starting the burner, valve 60 is closed combustible matter is placed in the drum 1l and lighted. Gas is then supplied to the trough 37 through the supply pipe 66, which supply pipe is connected to an ordinary gas main. The valve is interposed in pipe 66 at a desired point so that the gas may be turned on and off at any time. .After the gas has been allowed to burn for a few minutes and the parts have been heated, the oil is then gradually turned on and the gas turned oil after the oil has been ignited. `When it is desired to turn out the burner, all that may be necessary to do is to shift the lever, 63 for closing the valve 60 and` consequently, the burner will be deprived of oil and as soon as the oil therein has been consumed, the burner will auto-maticallv become extinguished.

What I claim is:

1. An oil burner comprising a mixing drum open from the top to the bottom, an oil trough arranged below .said drum, a

vaporizing ring loosely mounted in said trough,- a ring co-acting with the vaporizing ring presenting an annular opening for the escape of vapor from said trough, said openingr being positioned to discharge the vapor substantially at right angles to tiie axis of the mixing drum into the upper part of the'trough and from thence into the mixing drum, and means co-acting with the mixing drum for directing air into the bottom of the mixing drunrimmediately above said annular opening for the vapor and substantiallv parallel thereto.

2. An oil burner comprising a mixing drum formed with a tubular lower portion flaring at the top with the edges of the flaring top forming an annular wall, an oi trough arranged below the mixing drum, means co-acting with the oil trough for presenting a vapor discharge opening for directing the Vapor at right angles to the axis of the mixing drum, means for deflecting the vapor into the mixing drum, means for directing air into the vapor as it enters the mixing drum, and means for shifting the mixing drum for varving the amount of air admitted.

3. An oil burner comprising a mixing drum, said drum being provided with a plurality of cams at the periphery, stationary cam faces co-acting with said camsh spaced radially beyond the air drum with a means for shifting the drum so that the cams will act on the cam faces for raising or lowering the drum, means for directing air past the lower edge of said drum whereby the raising and lowering of the drum will vary the amount of air allowed to pass into the drum, and means arranged below the drum for discharging the vaporized oil into the drum.

4. An oil burner comprising a mixing drum open from the top to the bottom, means for directing air into the drum at the lower end, an oil trough arranged below said drum, a pair ot rings carried by the trough and having an opening therebetween positioned near the upper part of the trough, said opening acting as a vapor discharge opening, said opening being positioned to discharge vapor from the trough into the lower part of said drum, a scraping member carried by one of said rings adapted to scrape the opposite ring` and a scraping member carried by the other ring for scraping the edge of the first mentioned ring, sa'd rings being rotatable.

5. An oil burner comprising an oil trough, means for supplying oil to said trough and for maintaining the same at a certain level, means co-acting with the oil trough provided with a vapor discharge opening for discharging the vapor from the oil trough, a mixing drum arranged with the lower end near said opening whereby the vapor is discharged in the'mixing drum, means for directing air beneath the lower edge of said drum and from thence into the drum, a series of cam structures carried by the drum, a lever for moving the drum for causing the cam structures to function and thereby raise or lower the drum for varying the amount of air admitted according to the direction of movement of the lever, and means for locking the lever in different adjusted positions.'

6. ln an oil burner of the character described a mixing drum, means co-acting with the mixing drum for supplying air into the mixing drum, a series of cams co-acting with the mixing drum for raising and lowering the same so as to vary'the amount of air admitted, a lever for shifting said mixing drum, a ittin carried by said lever, a rod supporting said fitting, said fitting being slidingly mounted on the rod and said rod being arranged substantially at right angles to the lever, said lever loosely extending through the fitting, and a clamping member carried by the fitting for clamping the fitting at any desired point along the rod whereby the lever, cams and mixing drum will be locked in an adjusted position.

7. An oil burner .comprising a tubular structure acting as an air drum, a mixing drum formed with an annular outer wall flaring portion spaced above the air drum and a downwardly extending tubular portion arranged Within but spaced from the air drum whereby air may pass upwardly on' the outside of the air drum, over the top thereof and then downwardly i'nto the mixing drum, an air guiding ring arranged near the lower end of the mixing drum for guiding air into the mixing drum, an oil trough arranged below the mixing drum, a vaporizing ring arranged in the oil trough and with the first mentioned ring presenting a vapor discharge opening positioned to discharge vapor from the oil trough into the mixing drum, and means for raising and lowering the mixing drum for varying the amount of air admitted.

8. An oil burner comprising 'a mixing drum formed with a tubular portion having the upper part provided with a depending annular wall having the lower edge suspended, an oil trough arranged below the mixing drum, means (3o-acting with the oil trough for presenting a vapor discharge opening for directing the vapor at right angles to the axis of the mixing drum beneath said lower edge, means for defieeting vapor into the mixing drum, and means for directing air into the vapor as it enters the mixing drum.

GEORGE B. DAHL. 

